P2103 - THROTTLE ACTUATOR "A" CONTROL MOTOR CIRCUIT HIGH

Throttle Actuator “A” (TAC) is located above or in front of the engine. This actuator is controlled by the PCM (Powertrain Control Module) via a voltage signal. The throttle motor opens and closes the throttle plate, thus allowing the required amount of air to pass through, as requested by the driver.

To adjust the actuator signal, the PCM receives electrical inputs from the coolant temperature, intake air temperature, A/C pressure sensors, and engine speed.

Storing the P2103 OBD2 fault code occurs because the PCM detected that the Throttle Actuator “A” circuit has excessively high voltage signals.

• Check Engine light.
• Hard acceleration.

The reasons for the P2103 OBDII diagnostic code setting are:

• Throttle Actuator "A" circuit may be shorted due to wiring damage.
• Possibly the Throttle Actuator "A" is bad.

To give the respective solution to the DTC P2103 OBD2 you should consider the following:

• Consult the Technical Service Bulletins.
• Check the wiring and connectors associated with the Throttle Actuator "A". Check for wear or corrosion. Repair as required.
• Use a DVOM and connect it to both actuator terminals to check resistance. Compare the actual reading with the specified reading and if the result indicates infinite resistance, there is a short in the actuator and it should be replaced.
• Verify that 12 volts are present in the supply circuit. If 12 volts are not present, repair the wiring.
• Check for a good ground connection. Repair it as required.